Joniškis
| Joniškis | |
|---|---|
| City | |
| Coordinates: 56°14′0″N 23°36′0″E / 56.23333°N 23.60000°E | |
| Country | Lithuania | 
| Ethnographic region | Aukštaitija | 
| County | Šiauliai County | 
| Municipality | Joniškis District Municipality | 
| Eldership | Joniškis eldership | 
| Capital of | Joniškis District Municipality Joniškis eldership | 
| First mentioned | 1526 | 
| Granted city rights | 1616 | 
| Government | |
| • Mayor | Vitalijus Gailius | 
| Population  (2022) | |
|  • Total | 8,455 | 
| Time zone | UTC+2 (EET) | 
| • Summer (DST) | UTC+3 (EEST) | 
| Website | joniskis | 
Joniškis (ⓘ; Samogitian: Juonėškis; Polish: Janiszki) is a city in northern Lithuania with a population of about 9,900. It is located 39 kilometers north of Šiauliai and 14 kilometers south of the Lithuania–Latvia border. Joniškis is the municipal and administrative centre of Joniškis district municipality.